android-first-line/chapter03/src/main/java/pers/tanyong/chapter03/TextViewActivity.java
<reponame>a-fly-fly-bird/quarter_of_my_collegepackage pers.tanyong.chapter03;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class TextViewActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_text_view);
    }
}